How to lower LDL Cholesterol?

I work at a hospital where we have to take cholesterol tests. I recently found out I have a LDL cholesterol level of 120. My HDL level was 50. I am also Hypoglycemic. I don’t know if that has anything to do with cholesterol. How do I lower my LDL cholesterol?
With out drugs. And if I could get a simple life of what to eat and what not to eat that would be apreciated.